Dog bed



FIG. 1 is a front perspective view of a dog bed in an open configuration showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a top, front perspective view thereof having the pocket in a closed configuration.

The broken lines in the drawings illustrate portions of the dog bed that form no part of the claimed design. 

CLAIM The ornamental design for a dog bed, as shown and described. 